The most popular, and the most thoroughly representative library of the city, is the Mercantile Library, located in Clinton Hall, in Astor Place. It owns this building, and its property is valued at $500,000. It was founded in 1820, by William Wood, a native of Boston, and a gentleman eminent for his efforts in behalf of the spread of education and liberal ideas. It began as a subscription library with a collection of 700 volumes, and was located in a small room at No. 49 Fulton street. The collection now numbers 120,000 volumes, and increases at the rate of 13,000 volumes a year. It is the fourth library in size in the Union. Those which are larger are the Library of Congress, the Public Library of Boston, and the Astor Library. The library is the property of the clerks of New York, and though it does not compare with the Astor in the solidity or value of its contents, is a creditable monument to the good sense and taste of the young men of our mercantile community. No one but a clerk can hold an office in it. The term “clerk” is made to include all men who live on a salary. These members pay an initiation fee of $1, and an annual subscription of $4. To all other persons the privileges of the library are offered at an annual subscription of $5. In April, 1870, the books of the institution showed a roll of 12,867 persons entitled to the use of the library and reading-room, the latter of which contains 400 newspapers and periodicals.

A large part of the collection consists of works of fiction. It is a lending library, and its books are sent to readers in Yonkers, Norwalk, Stamford, Elizabeth, and Jersey City, as well as in New York, in each of which it has branches. There are also branch offices in Yorkville and in Cedar street. Every morning a canvass bag, containing the books returned and

applications for others wanted, is sent from each branch to the library, and is returned in the afternoon full. The directors offer to establish a branch in any of the suburban towns in which one hundred subscribers can be obtained in advance. The average daily delivery of books is 760, of which about three-quarters are taken from the library proper, the rest from the branches. On Saturday evening the demand for books is very great.

The system of delivery is as follows:

“Each member on joining the library has a folio assigned him in the ledger, and its number is written on the ticket which is given him as a certificate of membership. Let us suppose you have received one of these tickets, and have made your selection of the book you want. You fill up a blank application card, with the name of the book desired. You hand that to one of the attendants. When he has found a book for you, he hands it, with your application card, to the delivery clerk. This gentleman occupies a large desk at the central counter, and has before him two immense drawers, divided into partitions for the reception of the cards. Each member’s name has a place in one or the other of these drawers, and the number of the folio shows where that place is. The clerk instantly turns to your name, and finds the card you handed in when you last borrowed a book. If the date, stamped at the time of delivery, shows that you have kept it longer than the rules allow, he levies a small fine, and you must pay it before you can borrow again. All formalities transacted, the old card is destroyed, the new one put in its place, and you are sent away in peace.

“The system of checking books, as we have described it, enables the librarian to ascertain in a moment just what any particular member has borrowed; but it does not show what has become of any particular book. Many attempts have been made to devise a system of double accounts, so that a check could be kept upon the members and the books at the same time, but without success. A partial record book, however, is now kept. Whenever a standard book is borrowed, the delivery clerk marks upon a little yellow ticket simply the folio number

of the borrower. Every day the yellow tickets are examined, and if it appear, say, that folio 10,029 has had a book more than three weeks, the clerk turns to the drawer and finds out who folio 10,029 is, and what book is charged against him, and sends him a notice that his time is up. It is found impracticable to apply this system to novels, which form the greater part of the circulation of the library; but it is useful as far as it goes, and prevents the loss of many valuable books.

“Of late years a postal order scheme has been perfected, and for convenience and simplicity it could hardly be improved. Its design is to enable members to draw books without visiting the library. Blank forms are obtained from the Post-office Department, about the size and shape of a newspaper wrapper, bearing on one side a two-cent postage stamp, and the printed address, ‘Mercantile Library, Astor Place, City,’ and on the other a blank application, with a five-cent ‘Mercantile Library delivery stamp,’ and some printed directions. You fill up the application in the usual way, fold the wrapper like a note (it is already gummed), and drop it in the nearest Post-office box. In a few hours at furthest a messenger brings to your house the book you

have asked for, and takes away the volume you want to return. The system is fast increasing in popularity. A horse and wagon are constantly employed in the collection and delivery, and the number of volumes sent out in this way is about 12,000 annually. The delivery blanks are sold at the rate of seven cents each—two cents representing the postage and five the cost of the delivery.”